Average annual temperature is 14.3 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -6.1 °C
Number of sunny days: 85 days
Number of rainy days: 259 days
Number of snow days: 21 days
Look at detailed online map of Iwafune
* Weather data for Iwafune Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 15.0 | 12.9 | 22.3 | 23.1 | 28.4 | 28.8 | 32.2 | 36.6 | 33.4 | 24.2 | 26.1 | 16.6 |
| Average daytime temperature (°C) | 5.0 | 5.3 | 12.6 | 16.0 | 19.8 | 24.4 | 28.8 | 33.6 | 28.4 | 19.3 | 14.9 | 8.3 |
| Average temperature (°C) | 2.3 | 2.6 | 7.7 | 11.3 | 15.3 | 20.8 | 24.9 | 29.1 | 24.4 | 15.3 | 11.2 | 5.5 |
| Average night temperature (°C) | 0.2 | 0.4 | 3.2 | 7.5 | 11.1 | 17.7 | 21.3 | 25.1 | 21.3 | 11.9 | 8.2 | 2.8 |
| Absolute minimum temperature (°C) | -6.1 | -2.9 | -1.5 | 1.7 | 4.0 | 13.6 | 15.8 | 21.9 | 14.5 | 8.7 | 3.1 | -2.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.0 | 4.6 | 7.9 | 7.9 | 8.3 | 8.2 | 9.4 | 11.9 | 7.8 | 7.8 | 5.5 | 3.6 |
| Precipitation (mm) | 185 | 146 | 129 | 134 | 200 | 234 | 244 | 40 | 206 | 206 | 226 | 279 |
| Sunny days | 0 | 1 | 14 | 12 | 11 | 5 | 10 | 11 | 7 | 6 | 5 | 3 |
| Rainy days | 23 | 15 | 17 | 18 | 20 | 25 | 21 | 20 | 23 | 25 | 25 | 27 |
| Snow days | 8 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Iwafune during the most sunny months:
The largest precipitation sum in Iwafune is at